Horatio allen



UNITED sTATEs PATENT oEEicE.

HoRATIo ALLEN, oE NEw YORK, N. Y.

ELASTIC WATER-STOP FOR CHECKING- THE FORCE 0R MMENTUM OF WATER IN PIPES.

Specification of Letters Patent No. 3,315, dated October 25, 1843.

To all whom t may concern Be it known that I, HoRA'rIo ALLEN, o the city and State of New York, have invented a new and useful Machine called an` Elastic Vater-Stop, of which the following is a full and exact description.

The combination which I have invented consists in placingin contact with the water in water pipes containing water under pressure, an elastic material within which, or on the opposite rside of which is a volume of air or other elastic body under the same pressure with the pressure of the water. By such an arrangement, when the water, flowing from a pipe containing water under pressure, is

`suddenly stopped, `the momentum of the vessel of some elastic material, closed at the ends, and perfectly air and water tight, and containing air orother elastic body as spiral springs, &c., under the same pressure with the water, to which the apparatus is to be applied. T is the chamber in which the vessel A is placed; P the projection, by which the chamber is attached to the water Plate 1l illustrates the arrangement when one side only, of the vessel containing the elastic body, is in contact with the water, and thatside is of an elastic material.

Fig. 1, is a front external view; Fig. 2, a vertical cross section; Fig. 3 is a side external View; Fig. 4L a view from below.

The chamber is formed of two parts B and C. I is a piece of leather,`or other elastic material, interposed between the two parts B and C. The two parts are thus riveted together, by the rivets R, R, so that the joints where the flanges come together, are

air and water tight. The leather will thus divide .the interior of the chamber into two divisions D and D. D', through the pipe P, is in free communication with the water pipe, and therefore when the apparatus is attached `to a water pipe is full of water. The division D contains air or other elastic body, as spiral springs, &c., under the same pressure with the water in the pipes, to

which the apparatus is to beapplied. If spiral or other springs or elastic body other than air, be used in the division D, then it is not necessary that from m to n be a continuous air tight` surface, but may be only a frame, tocontain and control the action of the springs, &c.

Forcer-tain pressures, the elastic material I 1n contact ,with the water, maybe made `of such dimensions as will under either air or other elastic body be unnecessary, and therefore they, as well as the interior part from m to fn., may be dispensed with, and the elasticity of the material I only be made use of. When such an arrangement is used, the best form is that shown in Fig. 3, plate l, when a tube I of adequately strong india rubber or other` elastic material, is fastened on the end of the pipe P, which contains water under pressure.

I claimw The combinations herein described, whereby an elastic inclosing material or an elastic separating material is interposed between the air or other elastic body, and the water, whose momentum is to be provided for; and also the combination of an elastic sheet or tube with the pipe containing water under pressure, whereby the elastic material forms a part of the inclosure of the water, and by its elasticity, a yielding resistance is provided for the momentum of the water.

In testimony whereof I the said HoEATIo 

